Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio results for Acer ED347CKR

Contrast ratio 105:1
Monitor model Acer ED347CKR
Submitted 04 Jul 2020 05:22 CEST, by 12.44.*.*
Camera model LGE LM-V405
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 121.4 s (Set EV to +13.6)

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –18.07 stops   (aim for –2 to –3)
Exposure spread 2.13 stops
Area used for calculation 0.231 x 0.231
Camera settings Exposure time: 1/400   ISO: 400   F-number: 1.9
Focal length: 16 mm   (35 mm equivalent)
Exposure compensation: -2
White
Screen photo
[open image]
Luminance 0.12 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –2.71 stops   (aim for –2 to –3)
Exposure spread 1.49 stops
Area used for calculation 0.231 x 0.231
Camera settings Exposure time: 1   ISO: 400   F-number: 1.9
Focal length: 16 mm   (35 mm equivalent)
Exposure compensation: 1

The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.